Cutting apparatus for mining machines



May 31, 192?,

J. CAMERON CUTTING APPARATUS FOR M'INI'NG macmmss Filed Nov. 6, 1925 ratusespecially unction with coal mining machines and 1t: consists in the novel features heremafter V I provide a structure' which is simple and strap plates. i Figure 8 is anend View of the strap plates. The cutting apparatus includes an elon 4 along its longitudinal edges. The said guide JAMES CAMERON,

or KEN'RYETTA," OKLAHOMA; 5 l a l comma APPARATUS Foammm iviAonmEsf V This invention relates to cutting appaadapted to be usedin condescribed and claimed. I

(An object of the in'ventionisto provide an improvedcutting apparatus which may be used in conjunction with anyflpractical form of mining machine and which includes a chain made upof blocks and strap plates pivotally connected togetherand in providing a guide support for the strapand block membersso that" cutting picks which are carried by the blocks Will be firmly sup:

ported and held against-"the coal Whilethe chain ismoving around the guiding support A furth'er'object of the invention is to v Figure 1 is a fragmentary plan View of the cutting apparatus With parts thereof broken away,

Figure 2 is an enlarged fragmentary sec l o I 1 I tional View tnereof cut on the line 22 of Fi ure 1.

3-3 of Figure 1;

Figure .is a plan view of used in the-apparatus. V

Figure 5 is aside elevational View, thereof. Figure 6is an edge View of a pair of strap plates used in the cutting apparatus. 7 i F igure' 7 is a side elevational view of the igure 8 is a similarview cut on the line gated arm 1 having guide rails 2 extending rails are T-shaped in transverse sections. The arm 1-1s provlded at its edges with longitudinally disposed grooves'lwhich receive the intermediate portions of the T shaped guide rails 2 and thesaid gu de rails 'guidejrails 2. The wheel its center and at its opposite "sides withg l I side :of the, guide irail; i pair are connected "together by cross rivets; 9 and spacing sleeves10 aremounted upon. one of the blocks The corners of the flanges 7 a i "Applicationfiled November 6, '1925.; if a ,r v

are fixed to the arm rails '2 as most 5 clearly" indicated 7 I the ings. The heads ofthe rails from the" edges, of the "arm, Plates are applied tojtheopposite'sides ofthe end pon 1 I t'ions of he arm land a sprocket Wheel'4 a y m an time 31;" 1 gwhlch; pass transversely through the arm 7 and" the flnter nediata portions, of the guide 3 7' 60 dotted linesin' Figures 2 and'3 ofthedraw 7 are spaced is journaled' betweenlthe plates*andisrdis p posed" beyond th' transverse thickness of it e peripheralfpr" tion of the Wheel 41s substantially equal to, thefiheads of the e is provided at" the transverse breadth of bosses 5 which increase the thickness of the intermediate *portion'of the Wheel and the Wheel at itsintermediate portion is fapproxithe thickness of the arm '1. Y J

end th 2 1111: J The ma'tely of thesame transverse:thickness as,

The cutting apparatus also lincludes a chain structure adapted sq move around'fthe longitudinaledges of the'jarm "1' andflalon v the guiderails 2 and around' the sprocket wlieelfla. The chain structureconsistsfo'f .7 strap plates-'6 provided attheir edges; and at their inner sides vvith inwardly extends ing flanges 7 adaptedto 'move falong j the edges of the armand in the spacesbetvveen} v I 1 f the heads of the/rails and the edges of the] arm as, best "indicated in Figure of the drawing The said strap plates arefrounded platesare arranged'in pairs and-tliernemi disposed one atlfeach. The members of'eachf at their. outer corners as are. vThe strap bersof the pairs are the intermediate portions of the rivets and between the inner surfaces of. strap plates'as best indicated re' beveled as at 11 in order that the said fianges'may be readily guided in the spaces between the the opposite. in FigureS,"

heads of the rails andthe-edges of thearm. 1

'The chain structure also includes blocks" i 12 having subtsantially cylindrical body, portions 13 and longitudinally disposed Web Web'port-ions 14 are ro 4 V videdat theend portionS'o'fthe blocks With portions 1 1. The

openings 15 which receive the sleeves-lO'of the platestructu'res. The ends o-f'theweb" portions Mare rounded'as'atlG to provide a space'for tlieireception offlthe teeth oflthe'l' f wheel 4 when the blocksarepassing around i Y i against the peripheries the Wheel 4 as best -=indicated in l igu're 1 V j the Wheel and in order that the inner edges ed to receive picks 18 of usual form. Set

screws 19 pass through the side portions of thebodies ofthe blocks and are adapted 1t 7 theyare securely held in position in the to engage the sides ofthe picks 18 whereby openings 17. The'openings-17 at the opposite end portions offthe' blocks pass each other at acute'angles softhat the'picks are disposed at angles with relation to each other and extend at equal distances beyond the median longitudinal line of the blocks;

' Thereiore "theblocks'and the picks are bar. anced and the "picks on-thesever'al, blocks are spaced at different distances "from each other so that when the apparatus 'is in use a kerf "is 'mad'e in the material and the opp V smooth 7 and the ikerf will be sufficiently broad toprovide ample clearance space for the cutting apparatus to enterfthe material torlthyextent of th full le'ngthiof the arm 31. The inner edges of the blocks 12; bear directly upon the outer surfacesjo f the heads of the guide rails 2 and consequently thee blocks ar'e' firmly supported upon the guide 7 fails and the strap plates. are firmly isupported upon the edges of the -arm:1-." The curved surfaces of the recesses 16 'aresubstan'tially "concentric vvith "relation to "the 7 g 15 and consequently the teeth of the sprocket wheelmay be received adjacent Openings in the said recesses Without binding. or

clampinglandzit the same time the inner surfaces offthe bloeks Will bear directly up .011 the peripheries of the bosses of'the 'vvheel "and consequently the picks's'are 'firmly"sup v.li rom the "foregoing description of the V ported during their -inovem armof thecuttmgapparatus and along theguid'e'railsand also wh lethey are passing,

ent along, the

around the peripheral portion of the bosses of the wheel.

sprocket Wheel.

con's'tru'ctionand operation of my improved device',;it will be seen "that I. have provided a simple, inexpensive and e'fiicient means vside surfaces of the kerf will Ebe f for carrying out'the objectsiof the invena tion. While I have particularly described 1 best adapted to perform the the elements functions set forth, is obvious that var ous changes in form, proportionand-in the,

minor details o t-construction may be re-,

sorted to, Without departing from the spirit or sacrificing any of the. principles of the invention.

Having described the invention claimed is -1. In a cuttingf apparatus ineluding V chain structure strap plates"formingalinks 1n vthe chain structure and "arranged m pairsyeach memberof eah pair having in- 'War'dly disposed flanges; rivets "connecting the members of the pa1rstogether, spacing sleeves flocated upon "the rivets, and pick carrying blocks havmg openings receiv ng the spacing sleeves.

'2. In cutt ng I apparatus an arm," T-

shapediguide rails having their Web portion insertedin the side edges "of the arman'd having their head portions spaced from i the side edges of the arm thereby providing channels at theoppositesideofthe 'arm and I a chain including strap plates having flanges slidably received in said channels and -pik strap plates and bearing agamst the outer arrying blocks pivoted to the surfaces otthe head portions of th e.,-guide,

rails.

In a cutting apparatus ar-1n; V shaped guide plates having their-'vveb"por-- in *the' side edges of the arm tion' inserted and having head v portions r spacedv from the, edgesof the arm thereby, formingfchannels J at the opposite side of-thefiarm, a'Wh'eel journaled at the end of the arm and pr-o vided at ts side with outstanding bosses; the inner surfaces In testimony of afiix my ture. I V I I of the channels-being.

"tangentially disposed with relation co-"the i peripheries of the bossesand a chain inhaving flanges which; in the channels "and I MEsC'A ERQ -f I 

